Plants adapted to arid environments are referred to as A. mesophytes B. xerophytes C. psilophytes D. halophytes

Adipose cells produce a hormone called leptin that acts on the brain to reduce food intake.

Leptin is a hormone secreted by adipose (fat) cells in response to the amount of body fat present. Its primary function is to regulate energy balance and body weight by reducing food intake and increasing energy expenditure. Leptin acts on the hypothalamus in the brain, specifically on the arcuate nucleus, where it inhibits the activity of neuropeptide Y (NPY) and agouti-related peptide (AgRP) neurons and activates pro-opiomelanocortin (POMC) neurons.

This leads to a decrease in appetite and an increase in energy expenditure, ultimately promoting weight loss. However, leptin resistance, where the body does not respond to the hormone properly, can contribute to obesity.

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Respuesta:

La respuesta correcta es la C, ya que II, III y IV son correctas.

Explicación:

Nuestro sistema inmunológico nos defiende de agentes patógenos que pueden enfermarnos, y está compuesto por dos tipos distintos de inmunidades: la inmunidad innata y la inmunidad adaptativa.

La inmunidad innata es aquella que reacciona primero cuando se presenta una amenaza, atacando a los patógenos de manera inespecífica gracias a mecanismos que ya existían antes de que se desarrolle la infección. Cuando se trata de inmunidad innata, nuestras principales barreras de defensa son la piel y las mucosas, y las células de la respuesta inmune de mayor relevancia son los neutrófilos, entre otras.

Por el contrario, la inmunidad adaptativa, es de respuesta tardía y puede actuar de maneras diferentes dependiendo de cuál sea el patógeno invasor. Hay dos tipos de inmunidad adaptativa, la humoral y la celular. De la inmunidad humoral participan principalmente los linfocitos B, que fabrican anticuerpos específicos; mientras que la inmunidad celular es llevada a cabo por linfocitos T. La ventaja que tiene la inmunidad adaptativa en comparación con la innata es que es específica, diversa, más eficaz, y POSEE MEMORIA.

Las células de la inmunidad adaptativa presentan la capacidad de "recordar" cómo el cuerpo actuó ante una amenaza en el pasado para poder llevar a cabo un plan mucho más eficaz. Esta es la razón por la que las vacunas funcionan: porque se le inyecta a los individuos una versión débil del patógeno (por ejemplo, del virus que causa la varicela) para que el cuerpo "aprenda" a vencerlo para cuando se encuentre con ese microorganismo en un futuro.

Answer: See Below

Explanation:

1. The scientist would need to identify the gene for a protein that would make it glow. For example Aequorea victoria, the jellyfish that produces green fluorescent protein (GFP) is the most common type of fluorescent tag use in biotechnology. This would be done by completing genetic sequencing to identify the gene of interest from the jellyfish cell.

2. The gene could then be amplified through PCR. Assuming this is a bacterial cell, a vector such as pUC19 could be used. The vector and the PCR amplified product would have to be digested. A double digest is recommended to ensure the gene inserts in the proper conformation.

3. Heat shock the plasmid into the cell and proceed on to Blue/White screening to identify which cells contain the gene of interest. You can then isolate and grow the culture containing the GFP gene and induce with IPTG to produce the protein that would make it glow.

Alternatively you could buy a pre-made plasmid from AddGene containing the GFP gene for 75$, complete a miniprep on the cells and heatshock. Either way works.

Answer:

GM is a technology that involves inserting DNA into the genome of an organism. To produce a GM plant, new DNA is transferred into plant cells. Usually, the cells are then grown in tissue culture where they develop into plants. The seeds produced by these plants will inherit the new DNA.

Explanation:

Part One: Energy Pyramid

To create an energy pyramid for the described ecosystem, we need to consider the trophic levels and the flow of energy. The trophic levels represent different positions in the food chain, with energy being transferred from one level to the next. Here's an example of how we can construct an energy pyramid based on the provided information:

Trophic Level 1: Producers (Plants)

Trophic Level 2: Primary Consumers (Herbivores)

Trophic Level 3: Secondary Consumers (Carnivores)

Trophic Level 4: Tertiary Consumers (Top Predators)

In this case, the energy pyramid would have three trophic levels, starting with the producers (plants) at the base, followed by primary consumers (desert fox) in the middle, and secondary consumers (sand grouse) at the top. As there is no mention of tertiary consumers in the provided information, the energy pyramid would not have a fourth trophic level.

Part Two: Food Web

Based on the provided information, we can construct a food web for the field ecosystem. A food web represents the interconnected feeding relationships between different organisms in an ecosystem. Here's an example of how the food web could be constructed:

Primary Producers (Grasses)

Primary Consumers (Deer, Rabbits, Mice, Crickets)

Secondary Consumers (Mountain Lions, Hawks)

The food web illustrates the feeding relationships between organisms in the ecosystem. Primary producers (grasses) are consumed by primary consumers (deer, rabbits, mice, and crickets), which are then consumed by secondary consumers (mountain lions and hawks). Additionally, mice and frogs have a direct feeding relationship as mentioned in the description. Snakes, being tertiary consumers, prey on mice.

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Answer:

Part One: Energy Pyramid

To create an energy pyramid for the described ecosystem, we need to consider the trophic levels and the flow of energy. The trophic levels represent different positions in the food chain, with energy being transferred from one level to the next. Here's an example of how we can construct an energy pyramid based on the provided information:

Trophic Level 1: Producers (Plants)

- Cacti, sagebrush, and low trees

Trophic Level 2: Primary Consumers (Herbivores)

- Desert fox (feeds on plants)

Trophic Level 3: Secondary Consumers (Carnivores)

- Sand grouse (feeds on termites)

- Desert fox (potentially feeds on sand grouse)

Trophic Level 4: Tertiary Consumers (Top Predators)

- None mentioned in the description

In this case, the energy pyramid would have three trophic levels, starting with the producers (plants) at the base, followed by primary consumers (desert fox) in the middle, and secondary consumers (sand grouse) at the top. As there is no mention of tertiary consumers in the provided information, the energy pyramid would not have a fourth trophic level.

Part Two: Food Web

Based on the provided information, we can construct a food web for the field ecosystem. A food web represents the interconnected feeding relationships between different organisms in an ecosystem. Here's an example of how the food web could be constructed:

Primary Producers (Grasses)

- Deer (browsing on leaves)

- Rabbits (feeding on grass)

- Mice (feeding on grass and seeds)

- Crickets (feeding on grass)

Primary Consumers (Deer, Rabbits, Mice, Crickets)

- Mountain lions (predators of deer and rabbits)

- Hawks (predators of snakes, rabbits, mice, and frogs)

Secondary Consumers (Mountain Lions, Hawks)

- Snakes (prey on mice)

The food web illustrates the feeding relationships between organisms in the ecosystem. Primary producers (grasses) are consumed by primary consumers (deer, rabbits, mice, and crickets), which are then consumed by secondary consumers (mountain lions and hawks). Additionally, mice and frogs have a direct feeding relationship as mentioned in the description. Snakes, being tertiary consumers, prey on mice.

Explanation:

Answer:

Both increased global warming and increased seawater acidity.

Explanation:

Good luck!

Whereas Scub yabapmat has 20 pairs of short chromosomes, the creature Sllub adirolfhtuos has 16 pairs of long chromosomes. In the somatic tissues of a hybrid between these two creatures, 36 chromosomes are anticipated.

Amoeba cherish has 500 chromosomes, whereas Ascaris megalocephaly only has two in each nucleus, making it the organism with the fewest chromosomes. There are 46 chromosomes in all, divided into 23 pairs, in humans.

Indeed, there are a certain number of chromosomes for each species of plants and animals. For instance, a fruit fly has four pairs of chromosomes whereas a dog has 39 and a rice plant has 12. For instance, both potatoes and chimpanzees contain 24 pairs of chromosomes.

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Answer:In the United States the average cow herd size is C.40 herds

Explanation: 40 herds is the average

Answer:

the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes.

Explanation:

Answer: 6A 7D 8B

Explanation:

Answer:

they have an exoskeleton, their hard outer covering

This process is called homeostasis.

The true statement about Haemonchus contortus infestation is that it causes muscle lesions. Option(2)

Haemonchus contortus is a blood-sucking parasitic nematode that commonly infects small ruminants, such as sheep and goats, and can cause significant economic losses in the livestock industry. The parasite feeds on the host's blood, which can lead to anemia, weakness, and decreased productivity.

The famacha card is a tool used to identify anemic animals and determine the severity of infection. It evaluates the color of the lower eyelid mucous membranes rather than the oral mucous membranes. While Haemonchus contortus is more commonly found in goats, it can also infect sheep and other livestock species.

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which of the following statements about haemonchus contortus infestation is true? question 7 options:

Answer:

Pasta

Explanation:

Answer:

D

Explanation:

Answer:

the response at R2 after lidocaine application will not be zero

Explanation:

The response at R2 after lidocaine would not be zero because it is recording the of all action potentials and some axons may be unaffected.

The veliger larval stage is a characteristic feature of various mollusks, particularly those belonging to the class Gastropod and Bivalvia.

Many species of the group Gastropod, which includes snails and slugs, have veliger larvae. A characteristic ciliated planktonic structure with a fully formed foot, a shell, and a swimming organ called the velum define this stage.

Gastropod veliger larvae are essential for the dispersal and colonization of new environments. Similar to this, the veliger larval stage is frequently seen in the group of animals known as Bivalvia, which includes clams, mussels, oysters, and scallops.

Bivalve veliger's have two ciliated lobes that they use for both feeding and moving around. Before undergoing metamorphosis and dispersing onto the sediment as juvenile bivalves, they normally spend some time as plankton.

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amino acids we obtained in the diet about 10

Gold fish and wild crucian carp can survive in low oxygen environment .

Gold fish have special properties it is evolved from the enzyme component that are specialized to convert carbohydrates into alcohol that can be released through the gills when oxygen level dropped.

Another most common oxygen response of fishes during oxygen deficient environment is aquatic surface respiration . During this behavior, fish halt just below the surface, put their nose at the air-water juncture and breathe in the level of water that is in direct contact with the air. This juncture of water is comparatively richer in oxygen content.

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The brain prefers glucose as its main fuel source. The main source of energy for the body is glucose, a form of sugar that may be found in many meals.

The blood-brain barrier can only be crossed by glucose, which is the only energy source the brain can use directly. Up to 70% of the energy needed for the brain to operate is provided by glucose, which serves as the brain's main fuel source.

The brain's neurons and glial cells mostly derive their energy from it. The only sugar in the human body that the brain can use as an energy source is glucose. Fructose, arabinose, maltose, and sucrose are examples of additional sugars.

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Answer:

False

Explanation:

Answer:

False.

Explanation:

protoplasm include cytoplasm and other organelles too.

the nucleus is one of the constituent of the protoplasm.

Good luck ✅.

Given data: Adult dosage of a substance is 280mg. Rule for calculating dosage for children between 1 to 12 years of age is given by the function, D(t) = a * t / t + 12. To find the rate of change of this function with respect to the child's age, we need to differentiate the function with respect to t.

Let's differentiate this function with respect to t. d/dt [ D(t) ]= d/dt [ a * t / t + 12 ]

Using quotient rule,= [ a * (t + 12) - a * t ] / ( t + 12 )²= a / ( t + 12 )²

Thus, the rate of change of child's dosage with respect to child's age is given by D'(t) = a / ( t + 12 )².

Hence, the required expression is D'(t) = 280 / ( t + 12 )².

Now, substituting t = 3,

we get, D'(3) = 280 / (3 + 12)²

= 280 / 225

= 1.244 mg/year

Substituting t = 12,

we get, D'(12) = 280 / (12 + 12)²

= 280 / 576

= 0.486 mg/year

Therefore, the rate of change of a child's dosage with respect to his or her age for a 3-yr-old child is 1.244 mg/year and for a 12-yr-old child is 0.486 mg/year. We are given the formula, D(t) = a * t / t + 12, which represents the dosage for a child as a function of their age, t. To find the rate of change of this function with respect to the child's age, we need to differentiate the function with respect to t.

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Answer:

If you are sitting in a chair in a room and the temperature outside the room changes, that would be a change in your environment. If the temperature outside the room changes and the temperature inside the room changes, that would be the stimulus for a change in your environment that might affect homeostasis. The set point for the temperature in the room is the temperature that the control center (the thermostat) is set at. The receptors in the room are the sensors that detect the temperature. The effectors in the room are the things that adjust the temperature, like the heater or the air conditioner. If the temperature outside the room changes and the temperature inside the room changes, that would be an imbalance.

What is a stimulus?

A stimulus is a change in the environment that can cause a reaction in an organism.

What is a control center?

A control center is a region of the body that is responsible for regulating certain functions.

What is a set point?

A set point is a specific value that the body sets for a particular function.

What are receptors?

Receptors are specialized cells that detect changes in the environment and send signals to the control center in the body.

What are effectors?

Effectors are muscles or glands that respond to signals from the control center and produce a change in the body.

What is an imbalance?

An imbalance is a condition in which there is a difference in the amount of a substance or energy between two systems.

Explanation:

Let me know if you need elaborating on any of the concepts above and I'd be happy to do so. Feel free to give me Brainliest if that helped :)

To properly identify the bacterial or viral infection infecting the animal, a culture test should be used.

Finding germs that can cause an infection, such as bacteria or fungi, requires a test called a culture. A sensitivity test determines the type of medication, such as an antibiotic, that will work the best to treat the illness or infection. An element that encourages the growth of germs is added to a sample of bodily fluid or tissue for culture.
The culture is unfavorable if no bacteria develop. The culture is positive if pathogenic microbes develop. A microscope or chemical tests can be used to determine the type of germ. Other sorts of organisms, including fungi, can take longer to develop in culture than bacteria, which typically do it in two days.

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Surface water is typically saltiest near the coast rather than in the middle of the ocean.

The salinity of surface water is influenced by various factors, including evaporation, precipitation, and freshwater input from rivers. Near the coast, there is often a higher concentration of salts due to limited freshwater input and high evaporation rates. Evaporation causes water molecules to escape, leaving behind the dissolved salts, thus increasing the salinity. Additionally, coastal areas may experience higher levels of evaporation due to warmer temperatures and stronger sunlight. This combination of factors leads to a higher salinity near the coast compared to the middle of the ocean.

However, it is important to note that salinity levels can vary depending on specific coastal characteristics and regional factors. For example, along the coast of California, the water can sometimes be unusually salty due to specific oceanographic conditions. These conditions may include upwelling events, where cold, nutrient-rich waters from the deep ocean rise to the surface. These upwelling events can bring in water with higher salinity, resulting in temporary increases in coastal salinity levels.

Understanding the factors influencing coastal salinity is crucial for various reasons, including ecosystem health, water management, and the impacts of climate change. By studying and monitoring salinity patterns, scientists can gain insights into ocean circulation, climate dynamics, and the distribution of marine organisms.

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The bacterial translational protein that is not a GTP-binding protein is RF - 1. The correct option is D.

IF-2 (Initiation Factor-2), EF-Tu (Elongation Factor-Tu), and EF-G (Elongation Factor-G) are all GTP-binding proteins involved in different stages of bacterial translation.

IF-2 is involved in the initiation of translation and plays a role in the binding of the initiator tRNA to the ribosome.

EF-Tu is an elongation factor that delivers aminoacyl - tRNAs to the ribosome during protein synthesis. It forms a complex with the aminoacyl-tRNA and GTP and facilitates its binding to the ribosome.

EF-G is another elongation factor that promotes translocation, which is the movement of the ribosome along the mRNA during translation. It also requires GTP for its activity.

On the other hand, RF-1 (Release Factor-1) is not a GTP-binding protein. RF-1 is involved in the termination of translation and recognizes the stop codons on the mRNA, causing the release of the newly synthesized protein from the ribosome.

Therefore, the correct answer is D) RF-1 as it is not a GTP-binding protein among the given options.

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Answer:

a) W w

b) W W

c) w w

hope it helps

Answer:

It doesn't matter what plant/flower it is:

A flower can either have the male or female part or both the parts. Flowers in plants carry out the reproductive functions in plants when both the male and female gametes are fused to produce the seeds which bear the fruit. These seeds germinate to produce new plant structures.

Explanation:

Answer:

Chronic hepatitis B and hepatitis D

Meiosis is the type of cell division that results in the formation of haploid gametes. It occurs in two phases. The first phase is called meiosis I and the second phase is called meiosis II. Here, we'll talk about meiosis II and the products of meiosis II.

Assuming that cytokinesis has occurred, the products of meiosis II can be drawn as follows:In the diagram above, it is assumed that the cell that undergoes meiosis is diploid (2n) and has four chromatids. It is also assumed that crossing over has occurred during meiosis I. After meiosis I, two cells are produced, each containing half the number of chromosomes as the original cell.

In meiosis II, each cell divides into two daughter cells. The chromatids in each daughter cell are no longer identical because crossing over has occurred, and each chromatid has a combination of maternal and paternal genetic material. The end result of meiosis II is four haploid daughter cells, each with one chromatid from each homologous chromosome.

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